Guests: John Batchelor, Doug Messier, Dr. David Livingston.  Topics:  Orion, Artemis 1 & SLS update with updates on Starship, Raptor engine testing and more.

Guest:  Tom Gardner;  Topics:  We talked about the Advanced Space CAPSTONE Project, engineering, lunar missions, CAPSTONE goals and objectives, cislunar development, NASA, Starship, lunar plans from other nations including China, Japan, UAE, ESA and Russia.

Guest:  Frank Slazer;  Topics:  The Coalition for Deep Space Exploration, government space, commercial space, launcher comparisons with SLS and Starship, market analysis, lobbying with congress, and much more.

Guest:  Dr. Robert (Bob) Zubrin;  Topics:  Searching for life on Mars, sample returns, planetary protection nuclear energy, student design contests, Mars Society programs and upcoming convention, gravity prescription determination, human spaceflight, NASA, Starship, SpaceX and much more.

Guest:  Sir Martin Rees and Donald Goldsmith:  Topics:  Their new book, "The End Of Astronauts: Why Robots Are The Future Of Exploration" which proposes human spaceflight BLEO should be done by the private sector, not by government.  Our guests discuss this proposal on this specific program.